Linear actuator



FIG. 1 is a first top perspective view of a linear actuator showing my new and ornamental design,

FIG. 2 is a first bottom perspective view thereof,

FIG. 3 is a top view thereof,

FIG. 4 is a bottom view thereof,

FIG. 5 is a side view thereof,

FIG. 6 is an opposite side view thereof,

FIG. 7 is a front view thereof; and,

FIG. 8 is a rear view thereof.

The features shown in broken lines in the drawings depict portions of the linear actuator which form no part of the claimed design. 

CLAIM The ornamental design for a linear actuator, as shown and described. 